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https://issues.apache.org/jira/browse/CASSANDRA-14261?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jeff Jirsa updated CASSANDRA-14261:
-----------------------------------
Resolution: Fixed
Fix Version/s: (was: 4.x)
4.0
Status: Resolved (was: Ready to Commit)
Nice catch. Backed out that change, added a comment on commit, and committed to
trunk as 3747a6cd993c1a4d1a4a9345f8efe3ebc6cb482b
> Compaction Profiling Improvements
> ---------------------------------
>
> Key: CASSANDRA-14261
> URL: https://issues.apache.org/jira/browse/CASSANDRA-14261
> Project: Cassandra
> Issue Type: Improvement
> Components: Compaction
> Reporter: Jeff Jirsa
> Assignee: Jeff Jirsa
> Priority: Minor
> Fix For: 4.0
>
> Attachments: patched-hot-threads.png, patched-tlab.png,
> unpatched-hot-threads-top.png, unpatched-hot-threads.png, unpatched-tlab.png
>
>
> There's some low hanging fruit in some laptop compaction runs, such as
> creating a ton of the same object unnecessarily and hashing cell names
> repeatedly to see if a column is dropped even when we should know that the
> table has no dropped columns.
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